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Chapter
Dendritic Computation of Direction in Retinal Neurons
The retina utilizes a variety of dendritic mechanisms to compute direction from image motion. The computation is accomplished by starburst amacrine cells (SBACs) which are GABAergic neurons presynaptic to dire...
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Article
Direction selectivity in the retina: symmetry and asymmetry in structure and function
Direction-selective retinal ganglions cells (DSGCs) consist of several distinct types that branch at different levels in the inner retina. Most types are compr...
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Article
Maximizing contrast resolution in the outer retina of mammals
The outer retina removes the first-order correlation, the background light level, and thus more efficiently transmits contrast. This removal is accomplished by negative feedback from horizontal cell to photore...
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Chapter
Functional Changes in Inner Retinal Neurons in Animal Models of Photoreceptor Degeneration
Retinitis Pigmentosa (RP) refers to a heterogeneous group of inherited disorders that result in the death of rod and cone photoreceptors. There is now abundant evidence to suggest that inner retinal neurons, p...
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Chapter and Conference Paper
Synaptic Mechanisms Underlying Direction Selectivity in Rabbit Retinal Ganglion Cells
In the vertebrate visual system, direction-selective signals are first encountered within the direction-selective ganglion cells (DSGCs) in the retina. The On-Off DSGCs have been most intensively studied, and ...
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Chapter
Direction-Selective Ganglion Cells in the Retina
The first stages in the neuronal processing of image motion take place within the retina. Some types of ganglion cells, which are the output neurones of the retina, are strongly stimulated by image movement in...
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Article
High-affinity glutamate transporters in the rat retina: a major role of the glial glutamate transporter GLAST-1 in transmitter clearance
Glutamate is the major excitatory neurotransmitter of the mammalian retina and glutamate uptake is essential for normal transmission at glutamatergic synapses. The reverse transcriptase-polymerase chain reacti...
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Article
Seasonal oxygen depletion in Chesapeake Bay
The spring freshet increases density stratification in Chesapeake Bay and minimizes oxygen transfer from the surface to the deep layer so that waters below 10 m depth experiece oxygen depletion which may lead ...
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Article
Phosphorus distribution in the Chesapeake Bay
The phosphorus distribution in the open waters of the Chesapeake Bay is described. Maxima of soluble reactive phosphorus (SRP) in deep water and total phosphorus in the euphotic zone occur in late summer. The ...
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Article
Significance of nanoplankton in the Chesapeake Bay estuary and problems associated with the measurement of nanoplankton productivity
Over a 2-year program of monthly cruises covering the entire Chesapeake Bay (USA), the phytoplankters which passed 35 μm mesh were responsible for 89.6% of the phytoplankton productivity. On a single summer cr...
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Article
Distribution of the cladoceran Podon polyphemoides in the Chesapeake Bay
The distribution of the cladoceran Podon polyphemoides (Leuckart) in the Chesapeake Bay (USA) estuarine system was determined by a quantitative pump sampling method, and the patterns of abundance were correlated ...
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Article
Plant pigments and light penetration in intertidal sediments
Die Verteilung pflanzlicher Pigmente und die Lichtpenetration wurden in vier verschiedenen Sedimenttypen untersucht, und zwar bei Barnstable Harbor, Massachusetts, USA. Mit einer Ausnahme erwies sich die Licht...
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Article
Light and photosynthesis in intertidal benthic diatoms
Diatomeen der Sandflächen des Barnstable Harbor (Massachusetts, USA) wurden eingesammelt und ihre Photosyntheserate bei verschiedenen Quantitäten natürlichen Sonnenlichts mit Hilfe der C−14-Methode ermittelt. Es ...
